IsoGrego

Find the top n Gregorian chants most similar to a given one, sorted by cosine TF-IDF similarity of the GABC files.

Last sync with GregoBase: 2025-12-20. Max GregoBase ID: 20393.

🎩 tip: "How to compute the similarity between two text documents?" StackOverflow question. Originally inspired by "examples of same setting, different texts?" MusicaSacra forum thread. See the source code on GitHub.

Click on the chant name to expand/contract the collapsible. Click the chant image to open it up in GregoBase. Click the 🔍 to find similarities to the given chant.

0. 🔍 100% Rector potens verax Deus (In Fer. et Fest. Simpl.)

   
1. 🔍 85% Rector potens verax Deus (in Dom. et Minor. Festis)

   
2. 🔍 81% Rector potens verax Deus (In Quadragesima)

   
3. 🔍 81% Rector Potens (In Feriis per annum et Festis Simplicibus)

   
4. 🔍 81% Rector potens (In Dominicis per Annum)

   
5. 🔍 80% Rector potens (In Tempore Paschali)

   
6. 🔍 77% Rector potens (In Adventu)

   
7. 🔍 76% Rector potens (in Feriis per Annum)

   
8. 🔍 74% Rector potens verax Deus (In tempore Passionis)

   
9. 🔍 72% Rector potens verax Deus (In Festis)

   
10. 🔍 71% Rector potens verax Deus (In Feriis per annum)

    
11. 🔍 70% Rector potens verax Deus (In tempore Epiphaniae)

    
12. 🔍 70% Rector potens (Tempus Nativitatis)

    
13. 🔍 70% Rector potens (In Pentecoste)

    
14. 🔍 68% Rector potens verax Deus (In Major. Festis)

    
15. 🔍 68% Rector potens verax Deus (In tempore Paschali)

    
16. 🔍 67% Rector potens (dom.)

    
17. 🔍 67% Rector potens (In Dominicis per Annum)

    
18. 🔍 66% Rector potens(In Festis Majoribus)

    
19. 🔍 66% Rector potens verax deus (in memoriis)

    
20. 🔍 66% Rector Potens

    
21. 🔍 66% Rector potens (In Festis Majoribus)

    
22. 🔍 64% Rector potens verax Deus (In Pentecoste)

    
23. 🔍 63% Rector potens (In Festis majoribus)

    
24. 🔍 63% Rector potens verax Deus (In tempore Nativitatis)

    
25. 🔍 63% Rector Potens (In Nativitate Domini)

    
26. 🔍 61% Rector potens verax Deus (Septem Dolorum)

    
27. 🔍 61% Rector potens (In Tempore Passionis)

    
28. 🔍 60% Rector potens (In Festis Minoribus)

    
29. 🔍 59% Rector potens (Adv.)

    
30. 🔍 59% Rector potens (In Tempore Paschali)

    
31. 🔍 59% Rector potens (In Tempore Ascensionis)

    
32. 🔍 59% Rector potens (In Quadragesima)

    
33. 🔍 57% Rector potens (In Epiphania Domini)

    
34. 🔍 57% Rector potens (In Adventu)

    
35. 🔍 57% Rector potens (In Adventu)

    
36. 🔍 56% Rector potens (In Ascensione)

    
37. 🔍 56% Rector potens (In Festo Corporis Christi)

    
38. 🔍 52% Rector potens verax Deus (In Ascensione)

    
39. 🔍 52% Rector potens (In Festo S. Cordis Jesu)

    
40. 🔍 52% Rector potens (soll.)

    
41. 🔍 51% Rector potens verax Deus (In Transfiguratione)

    
42. 🔍 51% Rector potens (in Solemnitatibus)

    
43. 🔍 50% Rector potens (In Festo Pentecostes)

    
44. 🔍 50% Rector potens Fer.

    
45. 🔍 49% Rector potens (in Festo Septem Dolorum BMV)

    
46. 🔍 49% Rector potens (In Festo Christi Regis)

    
47. 🔍 49% Rector potens Fer.

    
48. 🔍 48% Rector potens (In Festo S. Cordis Jesu)

    
49. 🔍 48% Te lucis ante terminum (In Fer. et Fest. Simpl.)

    
50. 🔍 47% Rerum Deus tenax vigor (In Fer. et Fest. Simpl.)

    
51. 🔍 47% Rector potens verax Deus (In festis BMV)

    
52. 🔍 45% Rector potens (In Festis BMV)

    
53. 🔍 41% Rector potens verax Deus (1)

    
54. 🔍 40% Rector potens (Dom.)

    
55. 🔍 39% Rector potens verax Deus (3)

    
56. 🔍 39% Rector potens verax Deus (2)

    
57. 🔍 38% Rector potens verax Deus (4)

    
58. 🔍 36% Te lucis ante terminum (in dominicis per annum)

    
59. 🔍 35% Te lucis ante terminum (In Dom. et Minor. Festis per Annum)

    
60. 🔍 35% Caeli Deus sanctissime

    
61. 🔍 35% Te lucis ante terminum (In Quadragesima)

    
62. 🔍 35% Te lucis ante terminum (Lent)

    
63. 🔍 35% Rerum Deus (In Tempore Paschali)

    
64. 🔍 34% Te lucis ante terminum (In Tempore Paschali)